6911 kHz Metronome signal 

Great reception

This may well be my memory playing tricks on me, but I think in the 90s 6911 kHz was used by an Irish pirate called Radio Dublin. I love the idea of this metronome clashing with their 70s hits and adverts for flooring companies! But it could have been any frequency up around there I guess.

Sounds like a very loud ticking clock. Thanks for sharing & 73.

Beautiful, "metronome" or "tennis racket" or "Stalingrad ticking clock"

nice reception!